Baltic Seabirds Transect Surveys

Ramunas Zydelis

doi:10.15468/zncjz5

Baltic Seabirds Transect Surveys

Citation

Zydelis, R. 2006. Baltic Seabirds Transect Surveys. Data downloaded from OBIS-SEAMAP (http://seamap.env.duke.edu/dataset/358) on yyyy-mm-dd. https://doi.org/10.15468/zncjz5 accessed via GBIF.org on 2023-09-27.

Description

Original provider: Institute of Ecology of Vilnius University Dataset credits: Gediminas Vaitkus, Institute of Ecology of Vilnius University Abstract: Seabirds transect surveys were conducted in Baltic Sea from 1992 to 1999. Standard seabird offshore sampling techniques assume that line transect of 300 m width is basically used for counting birds sitting on the water surface, whereas the 'snap-shot' method is used for the counting of flying birds at strongly fixed intervals of time.

Additional efforts were put into studies of the offshore seabird and waterfowl movements. We recorded flying birds along 1,000 m wide transect over the 'classic' 300 m transect used for calculations of seabird densities during 'snap-shots'. Purpose: The main purpose of our work was to investigate spatial structure and dynamics of the offshore seabird populations and to assess their status in specific conditions of the Baltic Sea marine ecosystem. The main tasks of our work were the following:
-Study species composition, abundance and spatial distribution of seabird populations in different seasons of the year, distinguish dominating species and the most important seabird concentration areas in the eastern Baltic;
-Study community structure of inter-specific assemblages and ecological adaptations of wintering seabird populations;
-Study the processes of spatial dynamics and trends of spatial structure in regional seabird populations within the gradient of winter climatic conditions; and
-Study offshore migratory routes and temporary concentration areas of seabirds in the Baltic Proper. Supplemental information: [2020-10-01] The following invalid species names were corrected according to the Integrated Taxonomic Information System (ITIS). Larus ridibundus (176835) => Chroicocephalus ridibundus (824041) Corvus monedula (179746) => Coloeus monedula (916629) Little Gull: Larus minutus (176840) => Hydrocoloeus minutus (824065) Little Tern: Sterna albifrons (176899) => Sternula albifrons (824126) Mergus albellus (175190) => Mergellus albellus (175196) [2015-03-24] There were 199 records with a value of "EMPTY" or "empty" in the species column. These records are removed.

Purpose

The main purpose of our work was to investigate spatial structure and dynamics of the offshore seabird populations and to assess their status in specific conditions of the Baltic Sea marine ecosystem. The main tasks of our work were the following:
-Study species composition, abundance and spatial distribution of seabird populations in different seasons of the year, distinguish dominating species and the most important seabird concentration areas in the eastern Baltic;
-Study community structure of inter-specific assemblages and ecological adaptations of wintering seabird populations;
-Study the processes of spatial dynamics and trends of spatial structure in regional seabird populations within the gradient of winter climatic conditions; and
-Study offshore migratory routes and temporary concentration areas of seabirds in the Baltic Proper.

Sampling Description

Study Extent

NA

Sampling

NA

Method steps

NA

Additional info

marine, harvested by iOBIS

Taxonomic Coverages

Scientific names are based on the Integrated Taxonomic Information System (ITIS).

Alle alle
common name: Dovekie rank: species
Alauda arvensis
common name: Eurasian Skylark rank: species
Alca torda
common name: Razorbill rank: species
Anas
common name: Dabbling Ducks rank: genus
Anas
common name: Dabbling Ducks rank: genus
Anas crecca
common name: Eurasian Teal rank: species
Anas platyrhynchos
common name: Mallard rank: species
Anser
common name: Bean Geese rank: genus
Apus apus
common name: Common Swift rank: species
Ardea cinerea
common name: Gray Heron rank: species
Aythya marila
common name: Greater Scaup rank: species
Bucephala clangula
common name: Common Goldeneye rank: species
Carduelis spinus
common name: Eurasian Siskin rank: species
Cepphus grylle
common name: Black Guillemot rank: species
Chlidonias niger
common name: Black Tern rank: species
Circus aeruginosus
common name: Western Marsh Harrier rank: species
Clangula hyemalis
common name: Long-tailed Duck rank: species
Corvus corone
common name: Carrion Crow rank: species
Corvus frugilegus
common name: Rook rank: species
Coloeus monedula
common name: Western Jackdaw rank: species
Columba palumbus
common name: Common Wood Pigeon rank: species
Cygnus columbianus
common name: Tundra Swan rank: species
Cygnus cygnus
common name: Whooper Swan rank: species
Cygnus
common name: Swans rank: genus
Cygnus
common name: Swans rank: genus
Cygnus olor
common name: Mute Swan rank: species
Erithacus rubecula
common name: European Robin rank: species
Fringilla coelebs
common name: Common Chaffinch rank: species
Gavia arctica
common name: Arctic Loon rank: species
Gavia immer
common name: Common Loon rank: species
Gavia stellata
common name: Red-throated Loon rank: species
Gavia
common name: Loons rank: genus
Gavia
common name: Loons rank: genus
Grus grus
common name: Common Crane rank: species
Hirundo rustica
common name: Barn Swallow rank: species
Larus argentatus
common name: Herring Gull rank: species
Larus canus
common name: Mew Gull rank: species
Larus fuscus
common name: Lesser Black-backed Gull rank: species
Larus hyperboreus
common name: Glaucous Gull rank: species
Larus marinus
common name: Great Black-backed Gull rank: species
Hydrocoloeus minutus
common name: Little Gull rank: species
Chroicocephalus ridibundus
common name: Common Black-headed Gull rank: species
Larus
rank: genus
Mergellus albellus
common name: Smew rank: species
Melanitta fusca
common name: Velvet Scoter rank: species
Mergus merganser
common name: Common Merganser rank: species
Melanitta nigra
common name: Black Scoter rank: species
Mergus serrator
common name: Red-breasted Merganser rank: species
Motacilla alba
common name: White Wagtail rank: species
Parus major
common name: Great Tit rank: species
Sterna paradisaea
common name: Arctic Tern rank: species
Passeridae
rank: family
Phalacrocorax carbo
common name: Great Cormorant rank: species
Phylloscopus
rank: genus
Podiceps auritus
common name: Horned Grebe rank: species
Podiceps cristatus
common name: Great Crested Grebe rank: species
Prunella modularis
common name: Dunnock rank: species
Regulus regulus
common name: Goldcrest rank: species
Rissa tridactyla
common name: Black-legged Kittiwake rank: species
Somateria mollissima
common name: Common Eider rank: species
Sternula albifrons
common name: Little Tern rank: species
Stercorarius
rank: genus
Sterna hirundo
common name: Common Tern rank: species
Stercorarius parasiticus
common name: Parasitic Jaeger rank: species
Stercorarius pomarinus
common name: Pomarine Jaeger rank: species
Sturnus vulgaris
common name: Common Starling rank: species
Tringa
rank: genus
Troglodytes troglodytes
common name: Winter Wren rank: species
Turdus merula
common name: Common Blackbird rank: species
Uria aalge
common name: Common Murre rank: species
Vanellus vanellus
common name: Northern Lapwing rank: species

Geographic Coverages

Baltic Sea

Bibliographic Citations

Contacts

Ramunas Zydelis
originator
position: Primary contact
Duke University
email: zydelis@duke.edu

OBIS-SEAMAP
metadata author
Marine Geospatial Ecology Lab, Duke University
A328 LSRC building
Durham
27708
NC
US
email: seamap-contact@duke.edu
homepage: http://seamap.env.duke.edu

OBIS-SEAMAP
distributor
Marine Geospatial Ecology Lab, Duke University
A328 LSRC building
Durham
27708
NC
US
email: seamap-contact@duke.edu
homepage: http://seamap.env.duke.edu

Ramunas Zydelis
owner
position: Primary contact
Duke University
email: zydelis@duke.edu

Ramunas Zydelis
administrative point of contact
position: Primary contact
Duke University
email: zydelis@duke.edu